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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 928 · 40 sums
TalentJR

The trick (Ekanyunena Purvena): Write the number with as many digits as there are nines (add zeros in front if needed). Left part: the number minus 1. Right part: “all from 9 and the last from 10” of the number. More digits than the nines (237 × 99)? Split off as many digits as there are nines (2 | 37): left = number − (front part + 1) = 234, right = complement of 37 = 63 → 23463.

NameDateTime takenScore ___ / 40
  1. 1.413 × 999 =
  2. 2.197 × 999 =
  3. 3.152 × 9 =
  4. 4.766 × 999 =
  5. 5.2 × 9 =
  6. 6.13 × 99 =
  7. 7.91 × 99 =
  8. 8.121 × 999 =
  9. 9.2922 × 99 =
  10. 10.78 × 99 =
  11. 11.533 × 999 =
  12. 12.119 × 9 =
  13. 13.1699 × 99 =
  14. 14.523 × 999 =
  15. 15.42 × 999 =
  16. 16.2 × 9 =
  17. 17.73 × 999 =
  18. 18.51 × 99 =
  19. 19.91 × 99 =
  20. 20.68 × 99 =
  21. 21.24 × 9 =
  22. 22.15712 × 999 =
  23. 23.11256 × 999 =
  24. 24.41 × 99 =
  25. 25.812 × 99 =
  26. 26.11 × 99 =
  27. 27.3509 × 999 =
  28. 28.56 × 99 =
  29. 29.8 × 9 =
  30. 30.2541 × 99 =
  31. 31.291 × 999 =
  32. 32.8 × 9 =
  33. 33.51 × 999 =
  34. 34.234 × 9 =
  35. 35.1266 × 99 =
  36. 36.2 × 9 =
  37. 37.7 × 9 =
  38. 38.1434 × 99 =
  39. 39.181 × 9 =
  40. 40.1209 × 99 =

Answer key

  1. 412587
  2. 196803
  3. 1368
  4. 765234
  5. 18
  6. 1287
  7. 9009
  8. 120879
  9. 289278
  10. 7722
  11. 532467
  12. 1071
  13. 168201
  14. 522477
  15. 41958
  16. 18
  17. 72927
  18. 5049
  19. 9009
  20. 6732
  21. 216
  22. 15696288
  23. 11244744
  24. 4059
  25. 80388
  26. 1089
  27. 3505491
  28. 5544
  29. 72
  30. 251559
  31. 290709
  32. 72
  33. 50949
  34. 2106
  35. 125334
  36. 18
  37. 63
  38. 141966
  39. 1629
  40. 119691

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